Forum 0.2.3. Security Fix

If you are using Forum 0.2 or Forum 0.2.1 you are strongly recommended to update to the latest release - 0.2.3. We recently patched a security hole in the release and therefore your older forum code could be comprised.

Thanks to all in the community who pointed this issue out, and if you find any security holes in any of our modules / core software please email the module maintainer or security [at] silverstripe [dot] com.